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Cool advice on hot motors

Publication: 
Maintenance Technoology
Publication date: 
August 2015
Author: 
Jim Bryan, EASA Technical Support Specialist

The effects of excessive temperature on motor performance are notorious. After moisture, they are the greatest contributor to bearing and winding failures. Understanding the source of increased temperature is key to correcting the problem and improving the reliability of your facility’s motor fleet.

Topics in this article cover:

  • Overload and service factor
  • Ventilation
  • Voltage variation
  • Electrical steel
  • Current density
  • Circulating currents
  • Harmonics